For a number to leave a remainder of three when divided by five does its unit digit have to be three? If so y?

Question

For a number to leave a remainder of three when divided by five does

Answer 1

"For a number to leave a remainder of three when divided by five"

means that the number N = 3 + 5n where n is any integer.

 

Examples: N =3,  8,  13,  18, ...  so you see that the units digit can be 3 or 8.  Thus the answer is NO.